Device for the manufacture of dies



(No Model.) 2 Sheets-Sheet 1.

G. F. GHAMPNEY.

Device for the Manufacture of Dios. No. 240,887. Patented May3, 1881.

Wsmesses (N0, uda'el.)

G.,F. GHAMPNEY. Device for the Manufacture of'D'ie's. NO. 2405887.

Patented May 3; I881.

UNITED STATES PATENT OFF CE.

eEoEcE F. GHAMPNEY, or TAUNTON, MASSACHUSETTS.

DEVICE FOR THE MANUFACTURE OF DIES.

SPECIFICATION forming part of Letters Patent No. 240,887, dated May 3, 1881.

Application filed February 14, 1881. (No model.) Patented in England August 11, 1879.

To all whom it may concern:

Be it known that I, GEORGE F. OHAMPNEY, a citizen of the United States, residing at Taunton, in the county of Bristol and State of Massachusetts, have invented an Improved Process and Apparatus for Making Dies for the Manufacture of Metal and other Articles, of which the following is a full, clear, and exact description reference being had to the accompanying drawings, making part of this specification, in which- Figure l is a vertical section through the die-block, its supporting cup or disk, and the cap or cover which fits over and incloses the die-block. Fig. 2 is a plan of the ring within which the die-block is placed afterbein g heated. Fig. 3 is an elevation representing the ring with the die-block inclosed therein in place beneath the hammer which carries the patrice or punch for impressing the die-block. Fig. 4 is a View of the tongs by which the die-block is grasped and transferred in a heated state to the ring, which incloses it while being operated upon by the hammer. Fig. 5 is a vertical section through the die-block, its'cap or cover, and the ring which contains the block in a heated state, the latter being represented as it would appear were it being held by the tongs preparatory to dropping it into the central aperture of the ring. Fig. 6 is aside elevation of the ring for containing the die-block. This invention is designed to facilitate the formation of (lies of steel, or iron faced with steel, without engraving or cutting by the impact of patrices or punches of steel, cast-iron, copper, gold, silver, and other metals, and is a great improvement on any and all processes heretoforeknown, both in'simplicity and practicability.

In practicing this invention I use a die-block, a, composed of steel, or iron faced with steel, and construct a cap or cover, I), of proper shape and dimensions to fit over and inclose the said die-block. This cap is formed to rest on a cup or disk, 0, which forms a support for the said block and cap. This apparatus, consisting of the above-named cap and cup with the dieblock a inelosed, is placed in a furnace of any suitable kind, and during the heating the closely-fitting cap I) prevents 'the access of air to the Surface of the die-block, which is, as it were,

in a vacuum, and thus protected from oxidation. After the said described parts have been placed in the furnace I proceed as follows that is to say, I provide a strong metal ring or container, d, which has a slide, E, working in a groove or guideway, 10, planed in the top of same, said slide covering the die space or cavity 01 in the center of the ring. I use a hammer, A, Fig. 3, working up and down between suitable guides, and upon the face of this hammer is secured the patrice or punch f. A vertical rod or lever, h, is supported on any suitable part of the hammer-frame or part adjacent thereto, and extends down to the aforesaid slide E, passing through a hole in the extended end of the same. This rod or lever is arranged in close proximity to the said hammer, and is formed with an inclined portion, which proj ects into the path of the hammer, so that thelatter, in falling, must come into contact with the same. The apparatus, consisting of the cap and cup, with die-block iuclosed, being placed in the furnace, as above described, is kept there until the said die-block has attained the proper degree of heat, (which is welding-heat.) The said apparatus is then removed from the fire,

the cap I) slightly raised, and the die-block grasped around thebottom with a pair of ton gs, B, Fig. 4, made especially for the purpose of thin flat metal, the cap I) resting upon the flat surface of the tongs. In this manner the cap I) and die-block a are placed over the ring 01 and under the drop-hammer A, and the dieblock a allowed to drop into the central cavity or die-space, d, of the ring d, immediately after which the slide E is pushed over the cavity 01, containing the hotdie-block to, thereby inclosing it and preventing any air from coming into contact with its surface and oxidizing the same. As soon as the die-block a has been dropped from the cob gs B into the ring d and covered by the slide E, the cap I), still resting upon the tongs, is removed out of the way, and the hammer Adropped immediately. The hammer, in

falling, strikes the inclined lower portion, 12, of the rod h, thereby operating the same, and causing it to suddenly jerk or draw out the slide E to such an extent as to uncover the central aperture or cavity, (1, and thus expose the die'block a therein, and immediately afterward the said hammer strikes with its full impetus, and by its impact the patrice or punch f forms its impression upon the face of the heated die-block a.

It is obvious from the above description that the heated die-block a is kept covered and safe from the oxidizing and cooling effects of the air until the instant when the hammer falls upon the same.

The ring d is provided at its edge with an annular groove, 2', into which may be fitted a flat strip of metal bent around and having its ends brought together, so as to form a handle,

to facilitate the moving of the ring from place to place.

What I claim as my invention, and desire to secure by Letters Patent, is

1. The herein-described process of manufacturing dies of steel, or of iron and steel, the same consistingin first exposing the die-block to heat within a closely-fitting cap or cover, from which the air is excluded during the heating of the said die-block, and then placing the die-b1ock within a ring or container and closely covering it, to exclude the air until the moment of impact of a patrice or punch placed upon the face of a hammer, substantially as set forth.

2. The combination, with the die-block a, of

the supporting cup or disk 0 and the cover or cap b, adapted to'fit over and close the dieblock, to exclude the air therefrom, and thus prevent it from becoming oxidized while being heated, substantially as described.

3. The ring or container 0?, adapted to re ceive and hold the heated die-block. a while being operated upon by the hammer A, in combination with the slide E, adapted to cover the die-block and exclude the air therefrom, and be withdrawn to uncover and expose the same on or immediately before the descent of the hammer, substantially as described.

4. The combination, with the ring or container d and its slide E, of the vertically-sliding drop-hammer A, provided on its face with a patrice or punch,f, and the rod h, connected with the slide and adapted to be operated by the hammer on its descent, substantially in the manner and for the purpose set forth.

Witness my hand this 21st day of January, A. D. .1881.

GEO. F. OHAMPNEY.

In presence of- ROBERT CALL, J. GRAHAM. 

